/***
 *
 * Exercise 1-3. Modify the temperature conversion program,
 * Fahrenheit to Celsius, to print a heading above the table.
 *
 * print Fahrenheit-Celsius table for fahr = 0, 20, ..., 300;
 * floating-point version.
 *
 ***/

#include<stdio.h>

int main(void)
{
    printf("A program print Fahrenheit-Celsius\n");

    float fahr, celsius;
    int lower, upper, step;

    lower = 0;
    upper = 300;
    step = 20;

    fahr = lower;


    printf("Fahr\tCelsius\t \n");

    while(fahr <= upper)
    {
        celsius = (5.0/9.0) * (fahr - 32.0);
        printf("%4.0f %10.1f\n", fahr, celsius);
        fahr = fahr + step;
    }

    return 0;
}